Soul Eater, Vol. 9

Ohkubo, Atsushi. Soul Eater, Vol. 9. 2012. 208p. ISBN 9780316071130. Available in the graphic novel section of the library. 

Tasked by Medusa to discover the vault where the demon tools are stored under DWMA in Soul Eater, Vol. 8, Crona is slowly breaking under the pressure of divided loyalties. He doesn't really want to help Medusa, but her psychological hold on him is too powerful to override, so he searches desperately for the vault, hoping she will leave him alone after he finds it.

Death tells Frankenstein to step up the training of the level one students. Kid, Maka, and Black*Star must learn to attune together so that they can work more effectively as a group, but Black*Star's desire to be the best is undermining this training. Their conflicting egos are standing in the way of them becoming DWMA's best team ever.

Meanwhile, Arachne dispatches a team to retrieve another demon tool, this time in Alaska. DWMA sends an assault team, and the students must stand guard outside while Stein and Marie infiltrate the ancient witch facility. Not everything is as it seems, however, and while the forces of Arachne and those of DWMA fight each other, the witches wait in the wings ...